RE: LLQ and policing

From: Bob Sinclair (bsinclair@netmasterclass.net)
Date: Wed Aug 16 2006 - 17:58:24 ART


David

LLQ does not police if there is no congestion. This has been a point of
confusion over the years, and is "unclear" in lots of documentation. You
can easily verify this by configuring a policy that prioritizes ICMP with a
very low bandwidth. Then do an extended ping with large packet size and
zero timeout.

If you do want to police it when not congested, add a police command to the
class.

HTH,

Bob Sinclair CCIE 10427, CCSI 30427
www.netmasterclass.net

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
roehsler
Sent: Wednesday, August 16, 2006 4:43 PM
To: ccielab@groupstudy.com
Subject: LLQ and policing

Hi,

Just trying to nail down an understanding of LLQ.

When you specify the amount of bandwidth that LLQ traffic can have
prioritized, can that class of traffic utilize more available
bandwidth if there is not congestion on the link? In other words is
the prioritized traffic policed to that specified limit?

Thanks

David



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